Antenna Guide A Thorough Instroduction To Rf Systems. Where Can I Find A Channel Guide For Subchannels On My HDTV?

Where Can i find a channel guide for Subchannels on my HDTV? - antenna guide a thorough instroduction to rf systems.

I started with integrated HDTV tuner. As I have many digital subchannels 68-1 and 68-2, and so on. This means my standard cable, no antenna for free HD TV in the air. I have a list of channels for the sub-channels without end, and wondered if it there?